Home / 217,830.04-300,570.14-136,148.68

Finding the Fourth Proportional to 217,830.04, 300,570.14 and 136,148.68

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Solution

The fourth proportional to 217,830.04, 300,570.14 and 136,148.68 is: 187,863.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,830.04 : 300,570.14 = 136,148.68 : x
  2. Step 2: Convert to fraction form
    217,830.04/300,570.14 = 136,148.68/x
  3. Step 3: Cross multiply
    217,830.04x = 300,570.14 × 136,148.68
  4. Step 4: Simplify right side
    217,830.04x = 40,922,227,808.42
  5. Step 5: Solve for x
    x = 40,922,227,808.42/217,830.04
  6. Step 6: Final answer
    x = 187,863.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.